{"id":"CVE-2024-49918","revision":"8c60fbdaf52e4add828e5446418609f9","records":[{"revision":"8c60fbdaf52e4add828e5446418609f9","observedAt":"2026-10-30T13:45:33.454+00:00","statement":{"source":"cve-program","id":"CVE-2024-49918","aliases":[],"title":"drm/amd/display: Add null check for head_pipe in dcn32_acquire_idle_pipe_for_head_pipe_in_layer","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: Add null check for head_pipe in dcn32_acquire_idle_pipe_for_head_pipe_in_layer\n\nThis commit addresses a potential null pointer dereference issue in the\n`dcn32_acquire_idle_pipe_for_head_pipe_in_layer` function. The issue\ncould occur when `head_pipe` is null.\n\nThe fix adds a check to ensure `head_pipe` is not null before asserting\nit. If `head_pipe` is null, the function returns NULL to prevent a\npotential null pointer dereference.\n\nReported by smatch:\ndrivers/gpu/drm/amd/amdgpu/../display/dc/resource/dcn32/dcn32_resource.c:2690 dcn32_acquire_idle_pipe_for_head_pipe_in_layer() error: we previously assumed 'head_pipe' could be null (see line 2681)","state":0,"publishedAt":"2024-10-21T18:01:45.036+00:00","modifiedAt":"2026-10-30T12:19:36.123+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c\",\n                            \"lessThan\": \"360eebfdd0ac5acd45a5fb888c2caecf19093b3f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c\",\n                            \"lessThan\": \"180280f3c4621d699d903773bb84bf7f0bc6a891\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c\",\n                            \"lessThan\": \"4f47292f488fa7041284dca1f1244116c18721f1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c\",\n                            \"lessThan\": \"96d4c2ee18d732a248d053aae8c4a27cb1d68d1c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c\",\n                            \"lessThan\": \"ac2140449184a26eac99585b7f69814bd3ba8f2d\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/gpu/drm/amd/display/dc/resource/dcn32/dcn32_resource.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4.15\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"4.15\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.191\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.10.14\",\n                            \"lessThanOrEqual\": \"6.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.11.3\",\n                            \"lessThanOrEqual\": \"6.11.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/360eebfdd0ac5acd45a5fb888c2caecf19093b3f","https://git.kernel.org/stable/c/180280f3c4621d699d903773bb84bf7f0bc6a891","https://git.kernel.org/stable/c/4f47292f488fa7041284dca1f1244116c18721f1","https://git.kernel.org/stable/c/96d4c2ee18d732a248d053aae8c4a27cb1d68d1c","https://git.kernel.org/stable/c/ac2140449184a26eac99585b7f69814bd3ba8f2d"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-49918","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-49918","identifiers":["CVE-2024-49918"]},"retained":false,"historicalAffected":[]}],"coverage":[]}